Template:Eraicon defines the following arguments that may be used (all are case-insensitive):

Titles

title - use to italicize the part of the article title that is not in parentheses. Similarly, this parameter is also used to italicize or otherwise modify the title displayed when the article name includes "/Canon".

title2 - use if the page's name includes a parenthetical descriptor and you wish to italicize part of the parenthetical descriptor.

notitle - used to disable the title functionality, allowing for articles with mid-title parentheses to be unaffected.

Note on banners: This template will not display the Legends banners on any non-mainspace article or any article that includes "real" as one of its parameters. If you wish to override this (for example, a video game or novel article), add either "canon" or "legends" as one of the parameters in the template to generate the correct banner.

Additional notes: The options that include the suffix "prot" will automatically detect the actual protection level on the page (except "ssprot", which uses the AbuseFilter and thus must be checked manually). If the protection level does not match the icon used, the icon will not be displayed and the page will be automatically added to Category:Pages with incorrect protection icons. Also, if the parameter does not match a valid option, the page will be placed into Category:Pages with bad parameters in Template:Eras.